Dump-door-operating mechanism.



1 P. SEMERG. DUMP noonorsn'frma MBGHANISM.

APPLICATION-'FILED FEB. 6, 1909. l 992,607-, PatentedMay 1.6, 1911.

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0l *im F. SEABERG'. DUHPDOOR OBBTING IBGHNISM. v ArrLIoATIoI lrum: rms.e, 1909. 992,607., f- Patented May 16, 1911.

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9@ n A A A A A A Am P. SEABBRG. l DUMP DOOR GPEBATING- MEGHANISM'lAPPLICATION FILED I EB. 6, 1909.

9.192,607. Patented May 16, 19111.

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, l".A SEABERG. DUMP DOOR OPERATING MEGHANISM. APPLICATION FILED FEB. 6.1909.

Patented May 16, 1911.-

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Specification-@Letters Patent. i Pate Application med February 6, 1909..Serial No. 476,524.

nteaiviay 1 6, 1911.'v`

' dependently of .the chainwhen the 'same is closed. The manner ofaccomplishing this and other objects of my invention willmoreclearlyappear fromthe following description and claims, taken inconnection with the accompanying drawings, in which- Figure 1 is an endview of a car, partlyv broken away,V showing the doors vin closedposition. Fi 2 isa view corresponding to Fig. 1, showing the doors open.Fig.-=3 is k a side elevatio'nofthe. en'd' ortion ofthe car. Fig. 4 is adetail view o the adjoining portions of two doors, together with partpfthe 'operating mechanism. Fig. 5 is an ndl view of the'part of thestructure show-n in Fig. 4. lFi 's. 6 and 7'. are detail views of theconnection between adjoining ends "of the sectionaloperating shaft. I

In the accompanying drawings, 'I have illustrated onespecic form ofmechanism 85 embodying myv invention, but the principle of the inventionis not de ndent upon the specic mechanism there il ustrated andmaybeappliedfin other forms.

.The car illustrated in the present instance i 40 comprises a centersill composed of channel beams 1 connected by webs2 and cross plates 3;Extending transversely! of the .car and resting'uppn the' centersillfare the cross sills 4,1and a ongitudinal central v`floor plate 5*4.5 lies abovethe center sill and is'snpported uponpedestals 6,`towhich the hinge `plates' `7 Aare'alsosecured.` Upon each side of thecenter sill 'and hinged -to theplates 7 is a l longitudinal series of.dumpdoors 8, each door occupying the opening framed by the center sill,the adjoining cross sillsand the nated generally by the'numeral 9.Preferab1y,'half of the doors upon each side ofthe 10 proved meansforoperating. the doors of v'cated at 12. When the sections *94' are inncenter sill are operated by a winding shaft 9 extending inwardly fromthe end of the car half. the length-thereof. Each winding shaft 9comprises bearing parts rotatably Y mountedin the ends of the crosssills, and

' eccentric door supporting sections vbetween the cross sills andopposite thedoors. The

bearings of the operating shaft in the cross sills are located insideofthe outer edge of thedoor when the latterfis in'cl'os'ed position, andwinding chains are securedat one *end to'said Operatingshaft and attlielother end f `'to said` doors. The eecentricity of thedoor" i supportingsections ofthe operatingshaft ris sucient to cause said parts to Alie'ontside 7 0 of the' outeredges of the doors when the shaft is rotatedyin the proper direction, and the parts are so disposedV and proportionedthat atv the time the .doors reach the levei ofthe operating shaft theeccentric portion is dlrected outwardly, thereby affording" clearancefor the passage of the door,-a fter which the continued rotationof theoperating, shaft brings the eccentric-.section bei neath- `the doors totake the strain of the 8 0 doors and superposed load pif from theoperating chains. When the doors are closed,

as above' described, the eccentric sections off v.the operating shaftwill lie in substantially the same Vertical plane with the supportingjournals of the' shaft, Ithereby avoiding anyy tendency due tothe weightof the doorsand load to. rotate the shaft.`

' Referring in detail 'to' 'the construction,

illustrated, the operating-shaft. consists'foffQO separate sections 9.Each ofthe Y sections 9. is bent to the form' of a crank having acentral eccentric sectionofset 'from the end] or bearing sections. Inthe present instance, I havefshown the'sections 9 connected by 9 5meansof a sleeve 10 which cored ont axially, a's'indicated at 11 inFigs. 6 and 7. Adjacent the ends, the axial opening 11ex tends radiallythrough the sleeve, as indiserted inthe sleeve 1'0, the crank armaparts-.

thereof lie in thepart l2 of the opening 'of Y I the sleeve 10, thuspreventing rotation of the connected sections and sleeve. For the.purpose of insuring the parts against disopenings in the sleeve andshaftsections,

"ande'yes 14 in the ends of these bolts may be utilized for the purposeof 'attaching the operating chains 16. The sleeves 10 .serve 11o 'looplacement, bolts 13' vmay be passed lthrough not only as a couplingbetween the ends of the sections 9, but also serve as a winding drum forthe operating chain. The sleeves 10 are journaled in openings in thecross` bearers 4 and are further supported by hear-- ings in hangers 16depending from and secured to the floor plate 17. Preferably, thehangers 16 and cross bearer 4 are spaced `apart and the winding chainreceived be- .the doors at their outer corners and provided at theirlower ends with openings to receive short cross shafts 19'which extendbeneath the cross sills and afford a connection between adjoining doors.The ends of the operating' chains are connected to the constructed.

connected cross shafts 19. It is not essential, however', to theapplication of the broad principle of my invention that the adjoiningdoors be connected asabove described and that the operating chainsbe'connected to the doors through the medium of the member which extendsbetween the doors; and the principal form of sectional operating shaftdescribed, while forming a con-- venient means of applying my invention,is

not indispensable, as the operating shaft With'eccentric sections mightbe otherwise Any suitable means may be employed for imparting rotationto the operating shaft. In the present instance I have shown a handlever 2l provided lwith a reversible pawl 22 adapted to coperate with apinion 23 secured to the end of the operating shaft beyond the end wallof the car. A detent 24 also cooperates -with a pinion upon the shaft 91to restrain the same against accidental movement.

Referring to Fig. 2 of the drawings, it will be apparent that when theoperating shaft is rotated in counter clockwise direction, the door willbe raised by the winding chain, and, as above stated, the part-s are soarranged and proportioned that when the outer edge of the doorreachesthe level of the operating shaft the eccentric portion of theshaft will be directed outwardly, thus affording clearance for the doorto pass the shaft, after which the continued rotation of the operatingshaft will carry the eccentric part of the' shaft beneath the door, asillustrated in Fig. 1. In this position the eccentric part of the shaftlies in the same vertical plane with the supporting bearings of theshaft., whereby there is no component of the weight of the door and loadtending to rotate the shaft. In the present instance, the shaft. 9 isshown as supporting the door through its contact with the under 'sidesof the castings 1S, said castings being formed with a curved bearingsurface conforming to the'path of movement ofthe eccentric part of theshatlt as ,it rides beneath the enter edges of the doors.

I claim 4 1. In a dump car a door hinged at one edge, a rotatableoperating shaft journaled adjacent the free edge of said door, saidshaft having a chain-winding section and an eccentric door-supportingsection, and a chain connected to said shaft and door.

2. In a dump car a door hinged at ne edge, a rotatable operatingshaftjournaled beneath the outer part of said door, said shaft having aneccentric section opposite said door sov proportioned as to clear saiddoor when said shaft is rotated, and a chain extending from said shaftto s aid door.

3. In a dump car a door hinged at' one edge, a rotatable operatincfshaft journaled adjacent the free edge of said door, said shaft havingconcentric chain-winding sections mounted in bearings at the sides ofsaid door andan eccentric door-supporting section opposite said door,and a chain connected to said shaft and door.

4. In" a dump car a door hinged at one f edge, a rotatable operatingshaft journale'd adjacent the free edge of said door, said Shaft havingconcentric chain-winding 'sections mounted in bearings at the sides ofsaid door and an eccentric door-supporting section opposite said door, achain connected to 'said shaft and door, the parts being so proportionedthat when said chain is wound on said shaft to close said door saideccentric section will lie beneath said door in substantially the samevertical plane with said concentric chain-winding sections.

5. In a car an underframe, hinged dump doors, a sectional shaftjournaled in said underframe adjacent the free edges ofsaid doors, eachsection comprising a concentric bearing` part and an eccentricdoor-supporting part, and connecting members between edges of saiddoors, each section comprising an eccentric door-'supporting part,connecting members journaled in said underframe and non-rotatablyengaging the adjacent ends of said sections, and winding chains securedto said connecting members and to said doors.

7. `In a car, an underframe, dump doors, a shaft journaled adjacent thefree edges of said doors, said shaft having eccentric parts adapted inone posit-ion of'said shaft to underlie and support said doors and inanotherposition to clear the edges of said doors, chains secured to saidshaft and doors, members connecting adjacent doors,. and means forrotating said sha-ft."

f 8. In a car an underframe comprisin -central and transverse sills,series of doors framed between said sills and hinged adjacent thelongitudinal center of the car, connecting members, each secured toadjacent doors and extending beneath said.

transverse sills, winding shafts and chains for raising and loweringsaid doors, said shafts having eccentric parts opposite said doors, saideccentric parts being adapted in one position of said shaft to underlieand support said doors and in another position to clear the edges ofsaid doors.

`9. In a car an underframe comprising central and transversesills, alongitudinal serie'sof doors framed between said sills and a longitudinahinged adjacent they longitudinal center of the car, connecting members,each securedto adjacent doors and extending beneath said transversesills, a winding shaft j ournaled in 20 said transverse sills beneaththe outer part of said doors, said shaft having eccentric sectionsopposite said doors so proportioned yas to clear said doors when saidshaft is rotated, and chains extending from said 25 shaftto saidconnecting members.

In testimony whereof', I have subscribed my name,v

, FREDERICK SEABERG. Witnesses:

WALTER A. Soo'l'r, HENRY A. Pnlzxs.

